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A Tour of PSR B1259-63/LS 2883(07-22-2015)A fast-moving pulsar appears to have punched a hole in a disk of gas around its companion star and launched a fragment of the disk outward at a speed of about 4 million miles per hour.

Light Beyond the Bulb: Over and Beyond the Rainbow(07-01-2015)While scientists and philosophers have tried to figure out exactly what light is for millennia, it's only been in the past several hundred years or so that we've really started to figure it out.